Assertion : Sky wave signals are used for long distance radio communication. These signals are in general, less stable than ground wave signals.
Assertion : Sky wave signals are used for long distance radio communication. These signals are in general, less stable than ground wave signals.
Reason : The state of ionosphere varies from hour to hour, day to day and season to season.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false
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The correct option is (b) Both A and R are true but R is not correct explanation of A.
Explanation:
Since ionospheric properties change with time, the sky wave signals are in general less stable than ground wave signals.
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